Observations of Taurulus bubalis were collected from the Baltic Sea area for HELCOM Red List species list. The HELCOM Red List of Baltic Sea species in danger of becoming extinct (2013) is the first threat assessment for Baltic Sea species that covers all marine mammals, fish, birds, macrophytes (aquatic plants), and benthic invertebrates, and follows the Red List criteria of the International Union for Conservation of Nature (IUCN). Almost 2800 species were considered in the Red List assessment and about 1750 were evaluated according to the IUCN Red List criteria. Taurulus bubalis has been placed to the Red List category of Least Concern (LC) species. The map shows the sub-basins in the HELCOM area where the species is known to occur regularly and to reproduce (HELCOM 2012).

Broad-scale habitat maps for the Baltic Sea have been produced in the EUSeaMap project in 2016. For German and Estonian marine areas, national (more accurate) datasets were used. German data included both substrate and light information (division into infralittoral/circalittoral). Estonian data included only substrate and the division into light regimes was obtained from the EuSeaMap data. Here, the habitat class “infralittoral mixed substrate” includes classes “mixed sediment” of the original data, in the infralittoral zone. The original polygon maps have been converted to 1 km x 1km grid. The scale of the substrate data used in broad-scale habitat maps varies from 1:250 000 to 1:1M (data from EMODnet Geology). Coarser resolution data has been used in areas, where 1: 250 000 substrate data has not been available. Due to different scales used, the habitat classes may show different sized patterns in different areas.

This dataset represents the underlying data on core indicator Zooplankton mean size and total stock (MSTS). The core indicator evaluates zooplankton community structure to determine whether it reflects good environmental status. Quantitative thresholds are used to evaluate core indicators status in Achieve, Fail or Not assessed. As a rule, achieve status occur when large sized zooplankters occur abundantly in the plankton community. Due to strong environmental gradients, size distribution and total stock of the zooplankton corresponding to achieve status vary between the Baltic Sea sub-basins. This dataset displays the result of the indicator in HELCOM Assessment Scale 2 (Division of the Baltic Sea into 17 sub-basins). The dataset contains following attributes: DOME - output field Description CNTRY - Country that has reported the measurement (cf. CNTRY) CRUIS - Cruise identifier (unique for data submission) STNNO - Station identification (unique for each CRUIS within the same data submission) SMPNO - Sample identifier (unique for each CRUIS and STNNO within the same data submission) MPROG - Monitoring programme (cf. MPROG). Multiple programmes are possible separated by “~” (ascii 126) PURPM - Purpose of monitoring (cf. PURPM) . Multiple purposes possible separated by “~” (ascii 126) MYEAR - Monitoring year. Note that MYEAR may not always be identical to the year in date of sampling DATE - Date of sampling (DD/MM/YYYY) Latitude - Latitude of measurement (decimal degrees) Longitude - Longitude of measurement (decimal degrees) MNDEP - Minimum depth of sample (m) MXDEP - Maximum depth of sample (m) STATN - Station name as reported HELCOM_subbasin - HELCOM subbasin name (L2) HELCOM_L3 - HELCOM subbasin with coastal and offshore division – HELCOM_ID (L3) HELCOM_L4 - HELCOM subbasin with coastal WFD waterbodies or watertypes – HELCOM_ID (L4) OSPAR_region - OSPAR region ICES area - ICES Statistical Areas (cf. ICES statistical areas) RLABO - Reporting laboratory (cf. RLABO) ALABO - Analytical laboratory (cf. RLABO) SLABO - Sampling laboratory (cf. RLABO) RLIST - Reference code list used for species (cf RLIST) SPECI - Species/taxon code/name of examined specimen, as reported by submitter (according to reported reference list RLIST) SPECI_name - Species/taxon name of examined specimen, as reported by submitter (according to reported reference list RLIST) AphiaID - AphiaID (id) of species in World Registry of Marine Species (WoRMS) WoRMS_name - Taxon species/name of species in World Registry of Marine Species (WoRMS) AphiaID_accepted - Accepted AphiaID (id) of species in World Registry of Marine Species (WoRMS) WoRMS_accepted_name - Accepted species/taxon name of species in World Registry of Marine Species (WoRMS) SEXCO - Sex of specimen (cf. SEXCO) SFLAG - Species flag (cf. SFLAG) . Multiple purposes possible separated by “~” (ascii 126) SIZCL - Size class (value from reference in SIZRF) SIZRF - Size class reference list (cf. SIZRF) STAGE - Developmental stage of the species (cf. STAGE) CPORT - Number of portions counted from split sample NPORT -Number of portions in split sample (SMPNO) PARAM - Measured parameter (cf. PARAM) MUNIT - Measurement unit (cf. MUNIT) Value - Value measured Final_MUNIT - The unit of the final value (cf. MUNIT) Final_value - For values that are reported as a number only (eg. ‘nr’ or ‘g’) the final concentration (eg. ‘nr/l’ or ‘g/l’) is calculated as value*NPORT/(CPORT * SMVOL). If value is reported as a concentration, Final_value and Value are identical SMTYP - Sampler type (cf. SMTYP) SAREA - Sampler/swept area (cm2) METOA - Method of analysis (cf. METOA) MAGNI -Total magnification FLVOL - Calculated flow .volume of water (m3) CLMET MESHS - Mesh size of net or sieve (µm) CLMET - Calculation method for FLVOL (cf. CLMET) SMVOL - Total sampled volume (m3) METFP - Method of chemical fixation/preservation (cf. METFP) QFLAG - Qualifier flag for measured value, i.e. “<” (cf. QFLAG). Multiple flags possible separated by “~” (ascii 126) VFLAG - Validity flag, i.e. “S“ suspect value (cf. VFLAG). Multiple flags possible separated by “~” (ascii 126) FINFL - Factors potentially influencing guideline compliance and interpretation of data (cf. FINFL) Multiple factors possible separated by “~” (ascii 126) REFSK - Reference source or key (cf. REFSK) DCFLGs - Data conversion flags from ICES Data Centre (cf. DCFLG). Multiple flags possible separated by “~” (ascii 126) Reference to the uploaded submission (integer). Unique for a submission tblSpotID Reference to the sampling event (integer). Unique for a sampling event tblSampleID Reference to the sample (integer). Unique for a sample tblParamID Reference to the measurement (integer). Unique for the data table

The dataset is showing spots where Coastal lagoons occurs in the Baltic Sea area as polygon regions used for the BRISK project (Sub-regional risk of spill of oil and hazardous substances in the Baltic Sea, http://www.brisk.helcom.fi/). This dataset has been produced by COWI (http://www.cowi.dk) based on data collected from HELCOM and Baltic Sea countries (Finland (Copyright: SYKE), Russia and Sweden). The dataset includes data provided by the BRISK Project Partner organisations from various Baltic Sea countries. The detailed documentation of what partner provided what data is given in the Annex of the document: 70618-3.1.2.2 Data Collection Report. Coastal lagoons have a high biodiversity, they are spawning and nursery areas for fish (such as perch, roach, sander, pike) and staging areas for birds during migration and moulting. Stranded oil may degrade slowly and the risk for damage to the habitat is high during clean up actions. The organisms encountered in the habitat are generally very vulnerable to oil.

This dataset describes fishing intensity for OT CRU mobile bottom contacting gear in 2014 based on VMS/Log book data processed by ICES Working Group on Spatial Fisheries Data (WGSFD). ICES secretariat collected during 2017 relevant VMS and logbook data for 2009-2016 to produce, as a technical service to HELCOM, updated spatial data layers on fishing intensity/pressure. Improved data quality control checks were implemented. Submitted data across the HELCOM area have improved in quality compared to previous data 2009-2013 published in 2015. Standardized methods were used to produce the requested data layers. The code used to create the data products is available here: https://github.com/ices-eg/wg_WGSFD For further technical information on the advice request, see http://www.ices.dk/sites/pub/Publication%20Reports/Advice/2017/Special_requests/helcom.2017.18.pdf HELCOM secretariat did the following processing to the shapefile provided by ICES: - Conversion to ETRS89LAEA coordinate system - Added feature and attribute "Reported" to display unreported areas. Dataset attribute information: c-square: Unique reference of the c-square polygon Year: Year of fishing activity mid_lat: latitude coordinate of the centroid of c-square inWGS84 decimal degrees mid_lon: longitude coordinate of the centroid of c-square inWGS84 decimal degrees SurfaceSAR: Surface area ratio (Swept area, < 2 cm penetration depth of the gear components) Subsurface: Subsurface area ratio (Swept area, subsurface =>2 cm penetration depth of the gear components) totweight: Total Weight (kg) totvalue: Total value (Euros) Kw Fishing Hours: (Kw*h) Fishing hours: (h) Reported: Yes=Reported data. No= No reported data (area that does not contain effort/intensity value due to lack of reported data). Please note that this dataset was updated (v2) in January 2019, see further details below in the lineage section.

This dataset contains results on HELCOM Assessment unit level 4b for shallow water oxygen. The information provided represents the data and results from the HELCOM HOLAS 3 indicator evaluation for eutrophication, covering the data period from 2016-2021. Shallow Water Oxygen results are reported by Contracting Parties based on data collected on national level by the Contracting Parties applying the indicator. Coastal assessment units (WFD water types or water bodies) are assessed based on WFD result data reported by countries. Indicator analysis of both open sea and coastal areas is carried out using the HEAT assessment tool (https://github.com/ices-tools-prod/HEAT). This analysis provide the basis of the HELCOM indicator evaluations and are utilized in the HOLAS 3 thematic assessment of eutrophication. Attribute description: ES = Eutrophication Status ES_SD = Standard Deviation ES_N = Number of Observations ES_N_Min = Minimum Number of Observations any given year ES_SE = Standards Error ES_CI = Confidence Interval ET = Eutrophication Target / Threshold ER = Eutrophication Ratio ACDEV = Acceptable Deviation BEST = ET / (1 + ACDEV / 100) EQR = Ecological Quality Ratio EQR_HG = Ecological Quality Ratio High/Good Boundary EQR_GM = Ecological Quality Ratio Good/Moderate Boundary EQR_MP = Ecological Quality Ratio Moderate/Poor Boundary EQR_PB = Ecological Quality Ratio Poor/Bad Boundary EQRS = Ecological Quality Ratio Scaled GTC = General Temporal Confidence STC = Specific Temporal Confindence TTC = Total Temporal Confidence GSC = General Spatial Confidence SSC = Specific Spatial Confidence TSC = Total Spatial Confidence TC = Total Confidence

A vector grid in 2 x 2 km resolution showing model results of environmental impact caused by spill of soluble oil from ships with size less than 5000 t as as g oil / km^2 weighted.This dataset has been produced by COWI (http://www.cowi.dk) for the BRISK project (Sub-regional risk of spill of oil and hazardous substances in the Baltic Sea, http://www.brisk.helcom.fi/). Fields: COL_NO (Dbl): Column ROW_NO (Dbl): Row WLoad (Dbl): Environmental impact (g oil / km^2 weighted).

This dataset contains core indicator results developed under the HELCOM Third Holistic Assessment of the Ecosystem Health of the Baltic Sea (HOLAS 3).

Observations of Merlangius merlangus were collected from the Baltic Sea area for HELCOM Red List species list. The HELCOM Red List of Baltic Sea species in danger of becoming extinct (2013) is the first threat assessment for Baltic Sea species that covers all marine mammals, fish, birds, macrophytes (aquatic plants), and benthic invertebrates, and follows the Red List criteria of the International Union for Conservation of Nature (IUCN). Almost 2800 species were considered in the Red List assessment and about 1750 were evaluated according to the IUCN Red List criteria. Merlangius merlangus has been placed to the Red List category of Vulnerable (VU) species. The map shows the sub-basins in the HELCOM area where the species is known to occur regularly and to reproduce (HELCOM 2012).

Observations of Alburnus alburnus were collected from the Baltic Sea area for HELCOM Red List species list. The HELCOM Red List of Baltic Sea species in danger of becoming extinct (2013) is the first threat assessment for Baltic Sea species that covers all marine mammals, fish, birds, macrophytes (aquatic plants), and benthic invertebrates, and follows the Red List criteria of the International Union for Conservation of Nature (IUCN). Almost 2800 species were considered in the Red List assessment and about 1750 were evaluated according to the IUCN Red List criteria. Alburnus alburnus has been placed to the Red List category of Least Concern (LC) species. The map shows the sub-basins in the HELCOM area where the species is known to occur regularly and to reproduce (HELCOM 2012).